In which of the following states is corn often grown for silage?

The correct answer identifies Vermont as a notable state for growing corn for silage, which is used primarily as livestock feed. Corn silage is crucial in dairy and beef cattle operations, serving as an energy-rich, palatable feed source.

Vermont's climate and soil conditions are conducive for the growth of corn, specifically for silage, as farmers focus on maximizing production during shorter growing seasons. While the other states listed also have agricultural operations, they are not as prominently known for corn silage production compared to Vermont.

States like Pennsylvania, New York, and New Hampshire have various agricultural practices, but Vermont is particularly recognized for its emphasis on dairy farming and the resulting demand for corn silage. This makes Vermont a key player in the market for quality silage, enhancing its significance in the context of this question.